Heel-trimming machine



2 Sheets-'Sheet 1.

J. T1 NGLBY. HEEL TRIMMING MACHINE.

Patented Dec.` 2,5, 1883.v

J WW

N. Pzms. Phmmugnpw, washington. m;

(Model.)

J. TINGLEY.

HEEL TRIMMING MACHINE. No. 290,817.

Patented Deo. 25, 1883.

Inman/01".

2 Sheets- Sheet 2.

Miren,

Arent @France JOHN TINGLEY, OIF PHILADELPHIA, PENNSYLVANIA.

HEEL-TRINIIVIING MACHINE.

SPECIFICATION forming part ofLetters `llatent No. 290,817, dated December 25, 1883.

" Application filed May l1, 1881. (Model.)

To @ZZ whom it may concern:

Be it known that I, JOHN TXNGLEY, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Heel-Trimming Machines, which improvement is fully set forth in the following specication and accompanying drawings, in which- Figure 1 is a side elevation, partly sectional, of the heel-trimming machine embodying my invention. Fig. 2 is a top or plan view, partly sectional. of a detached portion thereof, enlarged. Figs. 4. and 5 illustrate the action of the cutting or trimming tool on a reduced scale.

Similar letters of reference indicate corresponding parts in the several figures.

My invention has for its object the rapid trimming of leather heels embracing shapes known as pompadoun ogee, French,7 "half French,7 "concave,77 common low,

and straight heels, &c.

The inventionconsists, chiefiy, of a tool attached eccentrically to a tool holder or rocker, which is adapted to vibrate in the are of a circle, and operating with a cam-wheel bent alternately upward and downward, and a rotating heel-seat, substantially as hereinafter set forth.

Referring to the drawings, A represents a frame, and B the driving-shaft of the machine, which is vertically mounted on proper portions of said frame, and carries at top a heelseat, C, which appears just above the table of the machine. To the upper part of the frame is fitted a vertically-arranged plunger, D, the head a of which, overhanging the heel-seat C, is adapted to be advanced toward the latter by means of the cam-lever E, thereby clutching the heel upon the studded face of said seat, the plunger being raised, when the cam-lever is released, by the action of a spring, F, suitably applied.

G represents the cutting-tool, which consists of a suitable piece of steel bent lengthwise to conform to the shape of aheel, and sharpened at one end, forming the cutting-line corresponding to the height of the heel, said tool-being adj ustably connected with the tool holder or rocker H, which is pivotally sup- Fig.` 3 is a side view.

ported upon a carriage, H', on the table ofthe machine.

Attached to the roller H at the side opposite to the heel-seat is a rod, J, Vwhose lower end is connect-ed with a vertical slide, K, which is properly guided in an upright rising from the base of the machine, said slide carrying a stud or roller, L, and having connected with it a spring, K', for lowering said slide and rod, and consequently the end of the rocker to which said rod is attached. rIhe stud or roller Lrests on a cam-wheel, M, the hub of which is keyed or otherwise secured to the driving-shaft B, said wheel being constructed of a lower wheel, M', of cast metal, the outer rim of which is depressed at two opposite places, and slightly elevated at two other opposite places, thus forming a series of inclines on said lower wheel. The upper part of the cam-wheel consists of an annulus, M", of steel or other suitable flexible or elastic metal, attached tothe lower casting by means of bolts and set-nuts d, `which securely clamp the two wheels and permit the upper annulus to be bent or changed to any required shape or angle, it being noticed that the two opposite sides or halves are counter-parts, and each side or half is a form or pattern for half of a heel. The rocker H has at each end an annulus, U, within which is a pivot-block, P, formed with countersunk openings or cavities l 2 3, and held in position by means of screws O, passing through the annulus and tightening against said block, said openingsbeing adapted to receive the points of the pivotal bolts P', which are fitted to ears on the carriage H', the latter being made movable in the direction to and from the heel-seat by means of a screw, N, properly applied.

It will be seen that by means of the screws or bolts O, the pivot-blocks P may be held perpendicularly or horizontally, and the axis of the rocker may be set to various points within the circle U, thereby increasing or decreasing the eccentrieity of the cutter. By this eccentricity or eccentric vibration, the edge of the cutter is made to exactly describe the oblong or irregular contour of any heel for which it is set, acting in combination with the rotating cam-wheel and heel-seat, no guide or slot motion, as in other machines, being used, and

IOO

the heels are trimmed far around in front-a point much desired in fancy work.

A S represents the seat of the cutting-tool, and R the bolt for connecting the seat and tool,

said seat projecting downwardly from the front end of the tool-holder, forming an acute angle with the horizontal plane of the rocker, the tool thus extending eccentrically to the line of the axis of the rocker, the effect of which is to vibrate the cutter in the segment of a circle about the line of the axis of the rocker toward and from the axis of the heel-seat, the radius of said circle being adjustable to different diameters by the adjustable axis of the rocker through the medium of the pivot-blocks hereinbefore described, thereby varying at will both the extent of the vibrating circle and length of vibration. The heel,being clutched to the heel-seat on the cam-wheel shaft, rotates in unison with the cam-wheel surface, bringing the highest elevation of the cam to the rear of the heel, and the cutter to the greatest distance from the axis of theheel-seat, this action being reversed at the sides of the heel, and giving as the result of this combined action the motion necessary to trim by continuous revolution all parts of the irregular oblong eccentric or winding surface shape of any required heel.

rIhe operation is as follows: The hecl,which is made of rough lifts pressed and nailed together, is placed upon the heel-seat C, and clamped by depressing the vertical plunger by the cani-lever E. Iower is applied to the pulley of the driving-shaft B. The cutter makes two vibrations to each rotation of the heel, and exactly obeys the motion imparted to it by the cam-wheel through the traveling roller, slide, and connecting-rod to the rocker. The cutter starts at the front right-hand corner of the heel, the traveling roller then standing on one of the two front elevations of the cam-wheel,which, moving the roller, descends to the lowest point of the ineline; but the cutter has advanced along the heel-seat on a line, gradually widening the seat as it approaches the center of the side of the heel. At this point the roller is at the lowest plane of the cam, and the cutter is nearest to the axis of the heel; but now the roller gradually ascends the approaching incline, moving the cutter back from the axis of the heel, and at the same time elevating its lower side as the center of the rear end of the wheel arrives at the cutter. If this is the last revolution, then one-half of the heel is nished, and the roller and cutter commence their return by the same shape of the cam and motion, only it is traveled in the opposite direction to the left-hand front corner, opposite the point of beginning. Across the front of the heel no work` is done continuous and simultaneous with the advance of the carriage, the latter being accomplished by the hand-wheel of the screw N as has been stated. rIhe most permanent part of the heelblank comes first in contact with the cutter,

and is planed away by thin shavings until the carriage arrives at a stop and ceases to feed.

It will be seen that the gage meets the edge of the cutting-tool substantially at right angles thereto, producing on the work the effect of the spoke or heel shave, and said tool and gage are attached eccentrically to the axis of the rocker, thereby swinging or vibrating the tool and gage bodily and curvilinearly toward and from the axis of the heel-seat, the eccentric distance from the axis of said rocker being such as to allow the oval-shaped heel to turn around within thel sweep of the swinging tool, all the parts being adapted and acting in concert to trim a heel by rapid and continuous revolution of the heel simultaneously with the forward motion of the carriage bearing the tool.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a heel-trimming machine, the combination, with a revolving heel-seat and a camwheel on the shaft thereof, of a cutter and a rocking support therefor, a carriage, and a rod connected with said support and cam-wheel, said cutter being attached to said carrier eccentrically to the axis thereof', and said cam having two sides the exact counterpart of each other, substantially as set forth.

2. In a heel-trimming machine, a cam consisting of two parallel plates alternately bent upward and downward, a revolving heel-seat, a cutter, a rocking support for the cutter, a carriage, and a rod connected with said support and cam-wheel, the cutter being attached to the support eccentrically to the axis thereof, substantially as set forth.

3. In a heel-trimming machine, a horizontally-rotating cam-wheel consisting of two parallel plates bent alternately upward and downward to govern the cutting of irregular forms of heel corresponding to the shape of the said plates, substantially as set forth.

4. In a heel-trimming machine, a horizontally-rotating cam-wheel consisting of two parallel plates, in combination with devices, substantially as described, for adjusting them toward and from each other, said plates being bent alternately upward and downward to govern the cutting of irregular forms of heel corresponding to the shape of said plates, substantially as set forth.

5. In a heel-trimming machine, a cuttingtool placed eccentrically upon a tool-carrier having an adjustable axis, a cam-wheel having an adjustable surface adapted to be shaped to the form or pattern of a heel, a rotating heel-seat, and clutch, in combination, for trim` ming a heel of irregular or winding contour, substantially as stated.

6. In a trimming-machine, a cam-wheel having a spring-steel adjustable surface, and duplicate sides adapted to be adjusted to become the form or pattern for the formation of the entire trimmed surface of any required heel,

IOO

IIO

in combination With atraveling roller, a slide, S. A cutter and a gage meeting the edge K, a connecting-rod, a carriage, the toolthereof at or about a right angle thereto, in

holder, the cutter, the rotary heel-seat, and combination with a rocking support, said cutclutch, substantially as and for the purpose ter and gage being connected with said sup- 5 set forth. port eccentrically to the axis thereof, substan- I 5 7. In a heel-trimming machine, a cutter or tially as described. f

heel-trimmer and tool holder or rocker, in i JOHN TINGLEY.

combination With the pivotal blocks P, screws Vtnesses:

O, and the supports or annuli U, substantially JAMES MCCRACKEN,

1o as and for the purpose set forth. SAM L M. GRICE. 

